Hi,
I'm trying to get pyqtgraph to work for 3d line and scatter plots.
The installation worked and I can run all the examples.
I can run 2d plots from Jupyter notebook.
When I create a 3d plot, it initially works. But when I then create another
plot, or close and re-draw the first one, python crashes.
Below is the code. It's copied from the 3d line plot example. First
execution works, second one crashes python. (Run from a Jupyter Notebook,
Python 3.5, Windows).
What am I doing wrong?
Thanks,
Matt
%gui qt5
from pyqtgraph.Qt import QtCore, QtGui
import pyqtgraph.opengl as gl
import pyqtgraph as pg
import numpy as np
# Open plot window:
app = QtGui.QApplication([])
w = gl.GLViewWidget()
w.opts['distance'] = 40
w.show()
w.setWindowTitle('pyqtgraph example: GLLinePlotItem')
# Add grid:
gx = gl.GLGridItem()
gx.rotate(90, 0, 1, 0)
gx.translate(-10, 0, 0)
w.addItem(gx)
gy = gl.GLGridItem()
gy.rotate(90, 1, 0, 0)
gy.translate(0, -10, 0)
w.addItem(gy)
gz = gl.GLGridItem()
gz.translate(0, 0, -10)
w.addItem(gz)
def fn(x, y):
return np.cos((x**2 + y**2)**0.5)
n = 51
y = np.linspace(-10,10,n)
x = np.linspace(-10,10,100)
for i in range(n):
yi = np.array([y[i]]*100)
d = (x**2 + yi**2)**0.5
z = 10 * np.cos(d) / (d+1)
pts = np.vstack([x,yi,z]).transpose()
plt = gl.GLLinePlotItem(pos=pts, color=pg.glColor((i,n*1.3)), width=(i+1
)/10., antialias=True)
w.addItem(plt)
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